Budget Justification. This is a three-year proposal. We request one half month of summer salary per year for Menke in each of year of the proposal. We request three months of support per year for Levin in the first two years, and two months in the third year. This support is divided into two months per year for the data analysis and interpretation, and one month per year for the first two years for efforts related to the operation of the array. We also request one month per year for an Administrative Assistant, who will assist in making the travel and shipping arrangements, and 30 days of technical assistance during the first year, when the array will be installed. We have budgeted for costs associated with the installation and maintainance of the seismometer array and for for travel of one person to the the San Francisco AGU in the last year of the project, for the purpose of presenting results. Costs associated with the seismometer array include van rental, subsistence while in the field, gas/tolls, shipping, installation, expendable supplies (batteries, concrete, etc.), backup media, etc. Data analysis will be performed on the LDEO network of unix workstations, which is charged through a subscription.